/* ========================================
   Gold Bet 7 - Global Design System
   Target: Bangladesh (bn-BD)
   ======================================== */

:root {
  --color-primary: #FFD700;
  --color-primary-dark: #E6C200;
  --color-primary-light: #FFE44D;
  --color-accent: #FF8C00;
  --color-accent-light: #FFA940;
  --color-secondary: #4FC3F7;
  --color-success: #66BB6A;
  --color-danger: #EF5350;
  --color-bg-dark: #0d0d2b;
  --color-bg-section: #111133;
  --color-bg-card: #1a1a3e;
  --color-bg-card-alt: #141432;
  --color-bg-light: #f5f5fa;
  --color-bg-white: #ffffff;
  --color-text-light: #e0e0e0;
  --color-text-muted: #a0a0b8;
  --color-text-dark: #1a1a2e;
  --color-text-body: #333344;
  --color-border: rgba(255,215,0,0.15);
  --color-border-light: rgba(255,255,255,0.08);
  --font-stack: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, "Noto Sans Bengali", sans-serif;
  --font-heading: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, "Noto Sans Bengali", sans-serif;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 50px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.15);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.2);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.3);
  --shadow-gold: 0 4px 20px rgba(255,215,0,0.15);
  --container-max: 1240px;
  --header-h-desktop: 70px;
  --header-h-mobile: 60px;
  --transition: 0.3s ease;
}

/* === Reset === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-stack);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text-light);
  background: var(--color-bg-dark);
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-accent); }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-bg-white);
}

/* === Container === */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
}

/* === Header === */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(13,13,43,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}
.header-top-bar {
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  color: var(--color-text-dark);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 0;
  text-align: center;
}
.header-top-bar a { color: var(--color-text-dark); font-weight: 700; }
.header-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h-desktop);
  gap: 16px;
}
.header-logo {
  flex-shrink: 0;
  width: 160px;
  max-width: 160px;
}
.header-logo img {
  max-height: 44px;
  width: auto;
  height: auto;
}
.header-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: nowrap;
}
.header-nav a {
  color: var(--color-text-light);
  font-size: 14px;
  font-weight: 600;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  transition: all var(--transition);
}
.header-nav a:hover,
.header-nav a.active {
  color: var(--color-primary);
  background: rgba(255,215,0,0.08);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  font-size: 14px;
  font-weight: 700;
  border-radius: var(--radius-full);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  text-align: center;
  line-height: 1.2;
}
.btn-register {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: var(--color-text-dark);
  border-color: transparent;
  animation: pulse-btn 2s ease-in-out infinite;
}
.btn-register:hover {
  background: linear-gradient(135deg, var(--color-accent), var(--color-primary));
  transform: translateY(-2px);
  box-shadow: var(--shadow-gold);
  color: var(--color-text-dark);
}
.btn-login {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-login:hover {
  background: var(--color-primary);
  color: var(--color-text-dark);
  transform: translateY(-2px);
}
@keyframes pulse-btn {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.04); }
}
.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: var(--color-text-dark);
  font-weight: 700;
  padding: 14px 32px;
  font-size: 16px;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-gold);
  color: var(--color-text-dark);
}
.btn-outline {
  background: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-primary);
  color: var(--color-text-dark);
}
.btn-secondary {
  background: var(--color-bg-card);
  border-color: var(--color-border);
  color: var(--color-text-light);
}
.btn-secondary:hover {
  background: var(--color-bg-card-alt);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* === Mobile Menu Toggle === */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text-light);
  margin: 5px 0;
  transition: var(--transition);
  border-radius: 2px;
}

/* === Hero Banner === */
.hero-banner {
  width: 100%;
  overflow: hidden;
  position: relative;
}
.hero-banner img {
  width: 100%;
  height: auto;
  display: block;
}

/* === Section Base === */
.section {
  padding: 60px 0;
}
.section-dark {
  background: var(--color-bg-dark);
}
.section-alt {
  background: var(--color-bg-section);
}
.section-card-bg {
  background: var(--color-bg-card);
}
.section-light {
  background: var(--color-bg-light);
  color: var(--color-text-body);
}
.section-light h2, .section-light h3 {
  color: var(--color-text-dark);
}
.section-title {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 12px;
  color: var(--color-bg-white);
}
.section-title span {
  color: var(--color-primary);
}
.section-subtitle {
  font-size: 16px;
  color: var(--color-text-muted);
  margin-bottom: 36px;
  max-width: 680px;
}
.section-header {
  text-align: center;
  margin-bottom: 40px;
}

/* === Quick Access Grid (shortcut cards - competitor pattern) === */
.quick-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
  margin: 30px 0;
}
.quick-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 12px;
  text-align: center;
  transition: all var(--transition);
  cursor: pointer;
  display: block;
  color: var(--color-text-light);
}
.quick-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-gold);
  color: var(--color-primary);
}
.quick-card-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 10px;
  background: linear-gradient(135deg, rgba(255,215,0,0.15), rgba(255,140,0,0.1));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}
.quick-card-icon svg {
  width: 28px;
  height: 28px;
}
.quick-card-title {
  font-size: 13px;
  font-weight: 600;
}

/* === Category Distribution Cards === */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.cat-card {
  background: linear-gradient(145deg, var(--color-bg-card), var(--color-bg-card-alt));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  transition: all var(--transition);
  display: block;
  color: var(--color-text-light);
}
.cat-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  color: var(--color-text-light);
}
.cat-card-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}
.cat-card-icon {
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, rgba(255,215,0,0.2), rgba(255,140,0,0.1));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.cat-card h3 {
  font-size: 20px;
  font-weight: 700;
}
.cat-card p {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: 16px;
  line-height: 1.6;
}
.cat-card .card-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
}

/* === Feature List Section === */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.feature-item {
  display: flex;
  gap: 16px;
  padding: 20px;
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}
.feature-dot {
  width: 10px;
  height: 10px;
  background: var(--color-primary);
  border-radius: 50%;
  margin-top: 8px;
  flex-shrink: 0;
}
.feature-item h4 {
  font-size: 16px;
  margin-bottom: 6px;
}
.feature-item p {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* === Content Feed / News Cards === */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.news-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}
.news-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.news-card-thumb {
  height: 180px;
  background: linear-gradient(135deg, var(--color-bg-card-alt), var(--color-bg-section));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 14px;
}
.news-card-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.news-card-date {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}
.news-card h3 {
  font-size: 17px;
  margin-bottom: 10px;
  line-height: 1.4;
}
.news-card h3 a {
  color: var(--color-bg-white);
}
.news-card h3 a:hover {
  color: var(--color-primary);
}
.news-card p {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 14px;
  flex: 1;
}
.news-card .read-more {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
}

/* === App Download Section === */
.download-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.download-content h2 {
  font-size: 30px;
  margin-bottom: 16px;
}
.download-content p {
  margin-bottom: 20px;
  color: var(--color-text-muted);
}
.download-steps {
  margin: 24px 0;
}
.download-steps li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 14px;
  font-size: 15px;
  color: var(--color-text-light);
}
.step-num {
  width: 28px;
  height: 28px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: var(--color-text-dark);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  flex-shrink: 0;
}
.download-visual {
  background: linear-gradient(145deg, var(--color-bg-card), var(--color-bg-card-alt));
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  padding: 40px;
  text-align: center;
  min-height: 320px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

/* === FAQ Accordion === */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
}
.faq-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  background: none;
  border: none;
  color: var(--color-text-light);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-stack);
  gap: 12px;
}
.faq-question:hover {
  color: var(--color-primary);
}
.faq-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  transition: transform var(--transition);
}
.faq-item.open .faq-icon {
  transform: rotate(180deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.faq-answer-inner {
  padding: 0 22px 18px;
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.7;
}
.faq-answer-inner a {
  color: var(--color-primary);
}

/* === CTA Section === */
.cta-section {
  background: linear-gradient(135deg, var(--color-bg-section), var(--color-bg-card));
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  text-align: center;
  padding: 60px 0;
}
.cta-section h2 {
  font-size: 30px;
  margin-bottom: 14px;
}
.cta-section p {
  color: var(--color-text-muted);
  margin-bottom: 28px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}
.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* === Long Content Area === */
.long-content {
  max-width: 860px;
  margin: 0 auto;
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-text-muted);
}
.long-content h2 {
  font-size: 24px;
  margin: 36px 0 16px;
  color: var(--color-bg-white);
}
.long-content h3 {
  font-size: 20px;
  margin: 28px 0 12px;
  color: var(--color-bg-white);
}
.long-content p {
  margin-bottom: 16px;
}
.long-content ul, .long-content ol {
  margin: 16px 0;
  padding-left: 24px;
}
.long-content ul { list-style: disc; }
.long-content ol { list-style: decimal; }
.long-content li {
  margin-bottom: 8px;
}
.long-content a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.long-content a:hover {
  color: var(--color-accent);
}

/* === Breadcrumb === */
.breadcrumb {
  padding: 16px 0;
  font-size: 13px;
  color: var(--color-text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.breadcrumb a {
  color: var(--color-text-muted);
}
.breadcrumb a:hover {
  color: var(--color-primary);
}
.breadcrumb-sep {
  margin: 0 8px;
  opacity: 0.5;
}

/* === Page Hero (Internal Pages) === */
.page-hero {
  background: linear-gradient(145deg, var(--color-bg-section), var(--color-bg-dark));
  padding: 48px 0 40px;
  border-bottom: 1px solid var(--color-border);
}
.page-hero h1 {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 10px;
}
.page-hero p {
  font-size: 16px;
  color: var(--color-text-muted);
  max-width: 700px;
}
.page-hero-center {
  text-align: center;
}
.page-hero-center p {
  margin-left: auto;
  margin-right: auto;
}

/* === Archive / Listing Page === */
.archive-header {
  background: linear-gradient(145deg, var(--color-bg-card), var(--color-bg-section));
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-bottom: 32px;
  border: 1px solid var(--color-border);
}
.archive-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.archive-item {
  display: flex;
  gap: 24px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: all var(--transition);
}
.archive-item:hover {
  border-color: var(--color-primary);
  transform: translateX(4px);
}
.archive-item-thumb {
  width: 200px;
  height: 140px;
  background: linear-gradient(135deg, var(--color-bg-card-alt), var(--color-bg-section));
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 13px;
}
.archive-item-body h3 {
  font-size: 18px;
  margin-bottom: 8px;
}
.archive-item-body h3 a { color: var(--color-bg-white); }
.archive-item-body h3 a:hover { color: var(--color-primary); }
.archive-item-meta {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-bottom: 10px;
}
.archive-item-body {
  overflow: hidden;
  min-width: 0;
  overflow-wrap: break-word;
  word-break: break-word;
}
.archive-item-body p {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.6;
  overflow-wrap: break-word;
  word-break: break-word;
}

/* === Article Detail === */
.article-detail {
  max-width: 820px;
  margin: 0 auto;
  padding: 40px 0;
  overflow-wrap: break-word;
  word-break: break-word;
}
.article-detail h1 {
  font-size: 30px;
  margin-bottom: 16px;
  overflow-wrap: break-word;
  word-break: break-word;
}
.article-meta {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-border);
}
.article-body {
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-text-muted);
}
.article-body h2 {
  font-size: 22px;
  margin: 32px 0 14px;
  color: var(--color-bg-white);
}
.article-body h3 {
  font-size: 18px;
  margin: 24px 0 12px;
  color: var(--color-bg-white);
}
.article-body p { margin-bottom: 16px; }
.article-body ul, .article-body ol {
  margin: 16px 0;
  padding-left: 24px;
}
.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }
.article-body li { margin-bottom: 8px; }
.article-body a { color: var(--color-primary); text-decoration: underline; }

/* === Related Articles === */
.related-articles {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}
.related-articles h3 {
  font-size: 20px;
  margin-bottom: 20px;
}

/* === Sidebar Links === */
.sidebar-links {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-top: 32px;
}
.sidebar-links h4 {
  font-size: 16px;
  margin-bottom: 14px;
  color: var(--color-primary);
}
.sidebar-links ul li {
  margin-bottom: 10px;
}
.sidebar-links ul li a {
  color: var(--color-text-muted);
  font-size: 14px;
}
.sidebar-links ul li a:hover {
  color: var(--color-primary);
}

/* === Tables (Bonus/Rules) === */
.info-table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
}
.info-table th {
  background: var(--color-bg-card);
  color: var(--color-primary);
  padding: 14px 16px;
  text-align: left;
  border-bottom: 2px solid var(--color-primary);
  font-weight: 600;
}
.info-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-muted);
}
.info-table tr:hover td {
  background: rgba(255,215,0,0.04);
}

/* === Footer === */
.site-footer {
  background: linear-gradient(180deg, var(--color-bg-section), #080820);
  border-top: 1px solid var(--color-border);
  padding-top: 48px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 32px;
  padding-bottom: 32px;
}
.footer-brand p {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-top: 16px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 16px;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul li a {
  color: var(--color-text-muted);
  font-size: 14px;
  transition: color var(--transition);
}
.footer-col ul li a:hover {
  color: var(--color-primary);
}
.footer-contact li {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: 12px;
  line-height: 1.5;
}
.footer-contact strong {
  color: var(--color-text-light);
}
.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: var(--color-text-muted);
}
.footer-logo {
  max-height: 36px;
  width: auto;
  margin-bottom: 12px;
}

/* === Back to Top === */
.back-to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  background: var(--color-primary);
  color: var(--color-text-dark);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
  z-index: 999;
  border: none;
  font-size: 18px;
  font-weight: 700;
}
.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}
.back-to-top:hover {
  background: var(--color-accent);
  transform: translateY(-2px);
}

/* === 404 Page === */
.page-404 {
  text-align: center;
  padding: 100px 20px;
}
.page-404 h1 {
  font-size: 80px;
  color: var(--color-primary);
  margin-bottom: 16px;
}
.page-404 p {
  font-size: 18px;
  color: var(--color-text-muted);
  margin-bottom: 32px;
}
.page-404 .btn-group {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* === Utility === */
.text-center { text-align: center; }
.text-gold { color: var(--color-primary); }
.mt-20 { margin-top: 20px; }
.mt-32 { margin-top: 32px; }
.mt-48 { margin-top: 48px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }
.pt-0 { padding-top: 0; }
.inline-link {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.inline-link:hover { color: var(--color-accent); }
.tag {
  display: inline-block;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 600;
  border-radius: var(--radius-full);
  background: rgba(255,215,0,0.12);
  color: var(--color-primary);
}
.divider {
  height: 1px;
  background: var(--color-border);
  margin: 32px 0;
}

/* === Responsive === */
@media (max-width: 1024px) {
  .quick-grid { grid-template-columns: repeat(3, 1fr); }
  .cat-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .header-nav { display: none; }
  .menu-toggle { display: block; }
  .header-main { height: var(--header-h-mobile); }
  .header-logo { width: 130px; }
  .header-logo img { max-height: 36px; }
  .quick-grid { grid-template-columns: repeat(3, 1fr); gap: 10px; }
  .cat-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .download-split { grid-template-columns: 1fr; }
  .section { padding: 40px 0; }
  .section-title { font-size: 22px; }
  .page-hero h1 { font-size: 24px; }
  .archive-item { flex-direction: column; }
  .archive-item-thumb { width: 100%; height: 160px; }
  .footer-grid { grid-template-columns: 1fr; }
  .cta-section h2 { font-size: 24px; }
  .btn { padding: 10px 18px; font-size: 13px; }

  /* Mobile nav overlay */
  .header-nav.mobile-open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(13,13,43,0.98);
    z-index: 9999;
    padding: 80px 24px 24px;
    align-items: flex-start;
    gap: 0;
    overflow-y: auto;
  }
  .header-nav.mobile-open a {
    font-size: 18px;
    padding: 14px 0;
    width: 100%;
    border-bottom: 1px solid var(--color-border);
  }
  .mobile-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    color: var(--color-text-light);
    font-size: 28px;
    cursor: pointer;
    display: none;
  }
  .header-nav.mobile-open .mobile-close { display: block; }
}
@media (max-width: 480px) {
  .quick-grid { grid-template-columns: repeat(2, 1fr); }
  .header-actions .btn { padding: 8px 14px; font-size: 12px; }
  .page-404 h1 { font-size: 56px; }
  body { font-size: 15px; }
}